I'm not a big contributor to Flyertalk, but I was amazed by this thread.

I think that in the end what goes around, often comes around That's a trite phrase I know, but as I get older I find it to be true more and more. Be the kind of person you would want your children to be proud of.

I wouldn't hesitate to offer my friend a free ticket or two. What's a couple of trips compared to a friendship?

I also hope your friend doesn't read flyertalk, because in your latest post, you seem to be insulting him. (Something about booking trips and losing points...I don't really get it since I'm not an experienced flyer, but I get that it's an insult.) Is this supposed to make him less worthy of your generosity? Did your behavior in this case make you less worthy of his when he gave your that ticket?

As for your situation, I truly hope this is the worst dilemma you ever have in your life. I can't help but think that if life were more difficult for you (or maybe you are still quite young with no family responsibilities), you would understand the true concept of paying it forward.